“But it is good to be zealously affected always in a good thing, and not only when I am present with you.”
King James Version (KJV)
4:18 In a good thing - In what is really worthy our zeal. True zeal is only fervent love.
Ga 4:18 [It is] good to be zealously sought affected always in [a] good [thing]. To exhibit zeal and feeling is a good thing. It was good to show this feeling when he was present with them. But now it was changed in respect of himself. It was "only when he was present".