Gerhard and Walther

God the Lord has constructed a fence in His Word and set limits over which we should not step. Nor are we to brood or speculate outside the realm of the revealed Word.—Johann Gerhard, Schola Pietatis III:61.

Even after the resurrection, Christ, according to his human nature, did not immediately assume dominion over all things. This took place after the ascension when, also according to His human nature, He entered into the full use of the same majesty and power the Father possesses.—C. F. W. Walther, God Grant It!, p. 422.