16 “For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. 17 For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him. (All scripture quotations from the ESV.)
Acts 16:31 And they said, “Believe in the Lord Jesus, and you will be saved, you and your household.”
Romans 3:21 But now the righteousness of God has been manifested apart from the law, although the Law and the Prophets bear witness to it— 22 the righteousness of God through faith in Jesus Christ for all who believe. For there is no distinction: 23 for all have sinned and fall short of the glory of God, 24 and are justified by his grace as a gift, through the redemption that is in Christ Jesus, 25a whom God put forward as a propitiation by his blood, to be received by faith.
Romans 10:9 because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. 10 For with the heart one believes and is justified, and with the mouth one confesses and is saved.
1 John 5:1 Everyone who believes that Jesus is the Christ has been born of God, and everyone who loves the Father loves whoever has been born of him.
5 Who is it that overcomes the world except the one who believes that Jesus is the Son of God?
10 Whoever believes in the Son of God has the testimony in himself. Whoever does not believe God has made him a liar, because he has not believed in the testimony that God has borne concerning his Son.
13 I write these things to you who believe in the name of the Son of God that you may know that you have eternal life.
In John 14, Jesus points out to His disciples that they must believe in Him.
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