We know He is alive for we have met Him and trust the Word He has written to us.
John 10:29 "My Father, who has given them to Me, is greater than all; and no one is able to snatch them out of the Father's hand.
John 17:24 "Father, I desire that they also, whom You have given Me, be with Me where I am, so that they may see My glory which You have given Me, for You loved Me before the foundation of the world.
1Cor 1:18 For the word of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God.
Luke 16:31 “But he said to him, ‘If they do not listen to Moses and the Prophets, they will not be persuaded even if someone rises from the dead.’”