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.

Treasury of Scripture Knowledge

Summary

For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.

Unto righteousness

Bible References

For with

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
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
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.
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].

Unto righteousness

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.

And with

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.
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.