Romans 2:28-29

2:28 For a person is not a Jew who is one outwardly, nor is circumcision something that is outward in the flesh, 2:29 but someone is a Jew who is one inwardly, and circumcision is of the heart by the Spirit and not by the written code. This person’s praise is not from people but from God.

Deuteronomy 30:6

30:6 The Lord your God will also cleanse your heart and the hearts of your descendants so that you may love him with all your mind and being and so that you may live.

Deuteronomy 30:2

30:2 Then if you and your descendants turn to the Lord your God and obey him with your whole mind and being just as I am commanding you today,

Colossians 1:22

1:22 but now he has reconciled you by his physical body through death to present you holy, without blemish, and blameless before him –

Ephesians 1:13

1:13 And when you heard the word of truth (the gospel of your salvation) – when you believed in Christ – you were marked with the seal of the promised Holy Spirit,

Ephesians 4:30

4:30 And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.

Revelation 9:4

9:4 They were told not to damage the grass of the earth, or any green plant or tree, but only those people who did not have the seal of God on their forehead.