'Sure' in the Bible

So I stood beside him, and killed him, because I was sure that he could not live after that he had fallen. I took the crown that was on his head, and the bracelet that was on his arm, and have brought them here to my lord."

Your house and your kingdom shall be made sure forever before you. Your throne shall be established forever."'"

Most certainly my house is not so with God, yet he has made with me an everlasting covenant, ordered in all things, and sure, for it is all my salvation, and all [my] desire, although he doesn't make it grow.