John Gill Commentary Ezra 9:10

"And now, O our God, what shall we say after this? for we have forsaken thy commandments," — Ezra 9:10 (ASV)

And now, O our God, what shall we say after this ?
&c.] What apology or excuse can be made for such ingratitude? what can be said in favour of such a people? what kindness can be expected to be shown to a people who had behaved in so base a manner?

for we have forsaken your commandments :
particularly those which related to marriages with people of other nations.