In bulletproof, inescapable logic:
1) If God is love, then all of God’s acts are loving.
2) God is love.
3) Therefore, all of God’s acts are loving.
4) If all of God’s acts are loving, then when God acts toward anyone, He acts in love.
5) If everything God does is loving, then there are no acts He performs which are not loving.
6) If there are no acts God performs which are not loving, then God never acts unloving. To anyone.
Deny 1, and 2 becomes meaningless. Deny 2, and you deny scripture. 3 cannot be denied without denying either 1 or 2. 4 is logically and obviously true, as are 5 and 6. If the argument is true, it leads infallibly to
7) All of God’s acts are loving, towards everyone. Always.
(I could argue for the “always,” but it seems so transparently true from the rest of the argument that it’s not worth the bother).