for ever = for the age (see App-151. a.), i.e. to the end of that Dispensation. The fig tree represents the national privilege of Israel (see notes on Jdg_9:10), and that is to be restored (Rom_11:2, Rom_11:26).
presently = at once, on the spot; Greek. parachrema, rendered "soon" in Mat_21:20. See note on "immediately", Luk_1:64.