'Sure' in the Bible

And Zacharias said to the angel, “How will I be certain of this? For I am an old man and my wife is advanced in age.”

Jesus said to His disciples, “Stumbling blocks [temptations and traps set to lure one to sin] are sure to come, but woe (judgment is coming) to him through whom they come!

but in every nation the person who fears God and does what is right [by seeking Him] is acceptable and welcomed by Him.

When Peter came to his senses, he said, “Now I know for certain that the Lord has sent His angel and has rescued me from the hand of Herod and from all that the Jewish people were expecting [to do to me].”

And [as for the fact] that He raised Him from the dead, never again to return to decay [in the grave], He has spoken in this way: ‘I will give you the holy and sure blessings of David [those blessings and mercies that were promised to him].’

to those who by persistence in doing good seek [unseen but certain heavenly] glory, honor, and immortality, [He will give the gift of] eternal life.

Sin was [committed] in the world before the Law [was given], but sin is not charged [against anyone] when there is no law [against it].

For I am convinced [and continue to be convinced—beyond any doubt] that neither death, nor life, nor angels, nor principalities, nor things present and threatening, nor things to come, nor powers,

In this way our testimony about Christ was confirmed and established in you,

For how do you know, wife, whether you will save your husband [by leading him to Christ]? Or how do you know, husband, whether you will save your wife [by leading her to Christ]?

Therefore let the one who thinks he stands firm [immune to temptation, being overconfident and self-righteous], take care that he does not fall [into sin and condemnation].

You are giving thanks well enough [in a way that God is glorified], but the other person [who does not understand you] is not edified [and spiritually strengthened since he cannot join in your thanksgiving].

For be sure of this: no immoral, impure, or greedy person—for that one is [in effect] an idolater—has any inheritance in the kingdom of Christ and God [for such a person places a higher value on something other than God].

I am convinced and confident of this very thing, that He who has begun a good work in you will [continue to] perfect and complete it until the day of Christ Jesus [the time of His return].

Only [be sure to] lead your lives in a manner [that will be] worthy of the gospel of Christ, so that whether I do come and see you or remain absent, I will hear about you that you are standing firm in one spirit [and one purpose], with one mind striving side by side [as if in combat] for the faith of the gospel.

And in no way be alarmed or intimidated [in anything] by your opponents, for such [constancy and fearlessness on your part] is a [clear] sign [a proof and a seal] for them of [their impending] destruction, but [a clear sign] for you of deliverance and salvation, and that too, from God.

This is a faithful and trustworthy statement, deserving full acceptance and approval, that Christ Jesus came into the world to save sinners, among whom I am foremost.

This is a faithful and trustworthy saying:If we died with Him, we will also live with Him;

Nevertheless, the firm foundation of God [which He has laid] stands [sure and unshaken despite attacks], bearing this seal: “The Lord knows those who are His,” and, “Let everyone who names the name of the Lord stand apart from wickedness and withdraw from wrongdoing.”

He must hold firmly to the trustworthy word [of God] as it was taught to him, so that he will be able both to give accurate instruction in sound [reliable, error-free] doctrine and to refute those who contradict [it by explaining their error].

For if the message given through angels [the Law given to Moses] was authentic and unalterable, and every violation and disobedient act received an appropriate penalty,

This hope [this confident assurance] we have as an anchor of the soul [it cannot slip and it cannot break down under whatever pressure bears upon it]—a safe and steadfast hope that enters within the veil [of the heavenly temple, that most Holy Place in which the very presence of God dwells],

Let us seize and hold tightly the confession of our hope without wavering, for He who promised is reliable and trustworthy and faithful [to His word];

let the [latter] one know that the one who has turned a sinner from the error of his way will save that one’s soul from death and cover a multitude of sins [that is, obtain the pardon of the many sins committed by the one who has been restored].

Therefore, believers, be all the more diligent to make certain about His calling and choosing you [be sure that your behavior reflects and confirms your relationship with God]; for by doing these things [actively developing these virtues], you will never stumble [in your spiritual growth and will live a life that leads others away from sin];

then [in light of the fact that all this is true, be sure that] the Lord knows how to rescue the godly from trial, and how to keep the unrighteous under punishment until the day of judgment,

But whoever habitually keeps His word and obeys His precepts [and treasures His message in its entirety], in him the love of God has truly been perfected [it is completed and has reached maturity]. By this we know [for certain] that we are in Him:

If you know that He is absolutely righteous, you know [for certain] that everyone who practices righteousness [doing what is right and conforming to God’s will] has been born of Him.

This is the [remarkable degree of] confidence which we [as believers are entitled to] have before Him: that if we ask anything according to His will, [that is, consistent with His plan and purpose] He hears us.