'Participate' in the Bible

if he doesn't lend with usury or exact interest, but instead refuses to participate in what is unjust, if he administers true justice between people,

You are to weep in silence, but you are not to participate in mourning rituals. You are to keep your turban on your head and your sandals on your feet. You are not to cover your mouth or eat what your comforters bring to you."

"Now as for you, Son of Man, this is what the Lord GOD has to say: "Tell all of the birds and wild beasts, "Come! Gather together and participate in the sacrifice that I'm going to make for you. This great sacrifice will take place on the mountains of Israel, where you'll be eating flesh and drinking blood.