“I am not praying only on their behalf, but also on behalf of those who believe in me through their testimony,that they will all be one, just as you, Father, are in me and I am in you. I pray that they will be in us, so that the world will believe that you sent me.The glory you gave to me I have given to them, that they may be one just as we are one—I in them and you in me—that they may be completely one, so that the world will know that you sent me, and you have loved them just as you have loved me” John 17.20-23 NET.
“… the gospel must be preached to all nations” Mark 13.10 NET
“It pleased God to use the foolish things we preach to save those who believe” 1 Corinthians 1.21 NIrV
“We proclaim him by instructing and teaching all people with all wisdom so that we may present every person mature in Christ” Colossians 1.28 NET.
“And how are they to believe in one they have not heard of? And how are they to hear without someone preaching to them?” Romans 10.14 NET.