Acts 1:3 To these he also showed himself alive after he suffered, by many proofs, appearing to them over a period of forty days, and speaking about God's Kingdom. (WEB KJV WEY ASV DBY WBS YLT NAS RSV NIV)
Acts 9:22 Saul, however, gained more and more influence, and as for the Jews living in Damascus, he bewildered them with his proofs that Jesus is the Christ. (WEY)
Isaiah 41:21 Produce your cause, saith the LORD; bring forth your reasons, saith the King of Jacob. (See RSV)