'Proofs' in the Bible

who came to Jesus at night and said to Him, “Rabbi (Teacher), we know [without any doubt] that You have come from God as a teacher; for no one can do these signs [these wonders, these attesting miracles] that You do unless God is with him.”

But many from the crowd believed in Him. And they kept saying, “When the Christ comes, will He do more signs and exhibit more proofs than this Man?”

To these [men] He also showed Himself alive after His suffering [in Gethsemane and on the cross], by [a series of] many infallible proofs and unquestionable demonstrations, appearing to them over a period of forty days and talking to them about the things concerning the kingdom of God.

trying to learn [by experience] what is pleasing to the Lord [and letting your lifestyles be examples of what is most acceptable to Him—your behavior expressing gratitude to God for your salvation].