Einstein was a follower of the static universe theory until Hubble came along and proved Lematre to be correct.
Einstein created his famous fudge factor cosmological constant around that time. Because, according to his general relativity theory, the universe should be collapsing under gravity. Since the observations showed it wasn't, but rather, instead, expanding, he doctored his equations to fit the observations. He called the constant, the "biggest blunder" of his life. Decades later, it was shown that, not only was the universe expanding, it was accelerating due to some still mysterious force or other mechanism. As it turned out, Einstein was right, but for the wrong reason.