“And the apostles said unto the Lord, Increase our faith,” Luke 17:5
Jesus said in Mark 11:24, “Therefore I say unto you, that what things you so desire, when you pray, believe that you receive them, and you shall have them.”
“The other disciples therefore said unto him, We have seen the Lord. But he said unto them, Except I shall see in His hands the print of the nails, and put my finger into the print of the nails, and thrust my hand into His side, I will not believe. And after eight days again his disciples were within, and Thomas with them: then came Jesus, the doors being shut, and stood in the midst, and said, Peace be unto you. Then said He to Thomas, Reach hither your finger, and behold My hands; and reach here your hand, and thrust it into My side: and be not faithless, but believing. And Thomas answered and said unto Him, My Lord and my God. Jesus said unto him, Thomas, because you have seen me, you have believed: blessed are they that have not seen, and yet have believed.” John 20:26-29.
“Let not your heart be troubled: ye believe in God, believe also in me, John 14:1.
“[convict them] Of sin, because they believe not on Me,” John 16:9.
“Jesus said unto her, I am the resurrection, and the life: he that believes in Me, though he were dead, yet shall he live, And whosoever lives and believes in Me shall never die. Believe you this?” John 11:25-26; vs. 40: “Jesus said unto her, Said I not unto you, that, if you would believe, you should see the glory of God?”