[Biblestudent]

Grace to Me,
Acts 2:39 doesn't even refer to all the "elect". See context: Acts 2:5-11. Compare also with Jer 46:27 ("afar off"). This verse is addressed to a nation who was "elect" (Isa 42:1; 45:4; 65:9,22), and this does not even include you, a Gentile.
But in Tit. 2:13, there are no "could be's" there. "All men" there is all without exception. Compare with 1 Timothy 2:4-6.