# have I asked of Yahweh

"I have asked Yahweh to let me do"

# I will seek that

A person really wanting something and continually asking God for it is spoken of as if he were seeking to find something.

# to see the beauty of Yahweh

"to see how wonderful Yahweh is" 

# to meditate in his temple

Possible meanings are 1) "to ask God what he wants me to do" or 2) "to think carefully about God in his temple."