Matthew 13:29

Lest while ye gather. The character of the two was not yet mature, and it would be disastrous to attempt what the servants proposed. Quite evidently it was not yet possible to “gather up the tares” without disturbing the wheat and preventing some of it from coming to maturity. Similarly, Christ permitted Judas to become a disciple because otherwise the other disciples, not recognizing his true character, would have questioned the wisdom of their Master (see DA 294; see on v. 24). Until the very close of His ministry Christ never openly rebuked Judas, because the disciples, who looked upon him with favor and admiration, would have been inclined to sympathize with him (see DA 563). Furthermore, he would have considered such a rebuke as justifying revenge.