Jesus said to his disciples, “Whoever wants to be my disciple must deny themselves and take up their cross and follow me.” Matthew 16:24 NIV

That if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation. Romans 10:9-10 (NKJV)

‍Two are better than one, because they have a good return for their labor: If either of them falls down, one can help the other up. But pity anyone who falls and has no one to help him up. Ecclesiastes 4:9 NIV

If anyone wishes to come after me, he must deny himself and take up his cross daily and follow me. Luke 9:23 NIV

… When you believed, you were marked in him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession—to the praise of his glory. Ephesians 1:13-14 NIV

Train yourself for godliness; for while bodily training is of some value, godliness is of value in every way, as it holds promise for the present life and also for the life to come. 1 Timothy 4:7-8 ESV