And if he brings all excuses he has, even then he will not be heard.
No excuses will be accepted.
even though he offers his excuses
Though he put up excuses
And even if he threw (gave) his apologies/excuses
Even though he may bring many excuses to justify his behavior
And even if he presents all the excuses he has, none will be listened to
Even though he puts forward his excuses
Even though he will offer all his excuses
(No excuse will be accepted from him) even though he puts forth his (all possible) excuses, (to prove his innocence)
Though he may put forth his excuses (to cover his evil deeds)