Romans 10:10
For a person believes [in Christ] with his heart in order to be made right with God, and he makes a profession with his lips in order to be saved.
Luke 8:15
And those people [represented by seed falling] in the fertile soil are those who possess a good and honest heart when they hear the word [of God]. They hold on to it and patiently [continue until they] produce a crop.
John 1:12-13
But He gave all those who did welcome Him the opportunity of becoming children of God by believing in His name [i.e., as the Messiah].
John 3:19-21
Now this is [how God's] judgment [works]: The Light [See 1:5-9] has come into the world, but people loved darkness [i.e., sin] rather than the Light, because their deeds were evil.
Romans 10:9
So, if you profess with your lips that Jesus is Lord and believe with your heart that God raised Him from the dead, you will be saved.
Galatians 2:16
still we know that a person is not justified [i.e., made right with God] by [perfect obedience to] the law of Moses, but rather through faith in [the person and work of] Christ. [Knowing this] we have trusted in Christ Jesus [to save us], so that we might be made right with God by trusting in Him and not by [our compliance with] the requirements of the law of Moses. Because by such law-compliance no one can be made right with God.
Philippians 3:9
and to be found in [fellowship with] Him, not having a righteousness of my own, acquired by observing the law of Moses, but one acquired through believing in Christ. This righteousness, which comes from God, is based on faith.
Hebrews 3:12
Pay attention, brothers, so that there will not be in any one of you an evil heart of unbelief, [resulting] in falling away from the living God.
Hebrews 10:22
we should draw close [to God] with a sincere heart and a fully assured faith, having had our hearts sprinkled from a guilty conscience [See 9:13-14] and having had our bodies washed with clean water [i.e., in our immersion].
1 John 4:15
Whoever proclaims that Jesus is the Son of God, God [continually] lives in that person's heart, and he lives in [fellowship with] God [See 2:23].
Revelation 2:13
I know where you are living; [it is] where Satan's throne is. And [I know] that you are holding on firmly to my name, and did not deny [your] faith in me, even in the days of my faithful witness Antipas [Note: The Greek word here for witness is "martyr"], who was killed there where you are, where Satan lives.