'Whenever' in the Bible

The unclean spirits, whenever they saw him, fell down before him, and cried, "You are the Son of God!"

Whenever you stand praying, forgive, if you have anything against anyone; so that your Father, who is in heaven, may also forgive you your transgressions.

For you always have the poor with you, and whenever you want to, you can do them good; but you will not always have me.