Behold

The word "behold" alerts us to a new person in the story. Your language may have a way of doing this. (See: rc://en/ta/man/jit/writing-participants)

was righteous and devout

These abstract terms can be expressed as actions. Alternate translation: "did what was right and feared God" or "obeyed God's laws and feared God"

The word "behold" alerts us to a new person in the story.

"did what was right and feared God" or "obeyed God's laws and feared God"

"the one who would comfort the people of Israel"

"the Holy Spirit was with him." God was with Simeon in a special way and gave him wisdom and direction.