It seems to me that the Bible use of May is usually in accordance with a promise from God. That is, these things are possible to you, but only if you first follow his instructions.
Here are some examples. I have shortened the verses somewhat for easier understanding.
Repent so that times of refreshing may come from the Lord. (Acts 3:19)
Lord, give me an undivided heart, that I may fear your name. (Psalm 86:11)
Seek the Lord while he may be found. (Isaiah 55:6)
May he give you the desire of your heart and make all your plans succeed. (Psalm 20:4)
May the God of hope fill you with all joy so that you may overflow with hope. (Romans 15:13)
I write to you who believe so that you may know that you have eternal life. (1 John 5:13)
Seek good, not evil that you may live. Then the Lord God will be with you. (Amos 5:14)
Walk in obedience so that you may your days in the land. (Deuteronomy 5:33)
Like newborn babies, crave spiritual milk, so that may grow up in your salvation. (1 Peter 2:2)
Humble yourselves under God’s mighty hand, that he may lift you up in due time. (1 Peter 5:6)
I could go on but you get the idea. There are lots of Mays ahead of us. Use them wisely.