2 yokes: Which is the Good News?

Exhibit A:
"come unto me and I will put you to work. I will teach you those things you must dutifully do. I will place upon your shoulders the weight of your own spiritual welfare. Although you might be weary, and get more weary still, if you hang on, persevere and otherwise struggle to the end, you will be saved."

Exhibit B:

"Come unto me, all you that labor and are heavy laden, and I will give you rest."