Matthew 18:14

Again, He is putting another reason stronger than the former, and connects with it a parable, by which He brings in the Father also as desiring these things. "For how think ye?" saith He; "If a man have an hundred sheep, and one of them be gone astray, doth he not leave the ninety and nine, and goeth into the mountains, and seeketh that which is gone astray? And if so be that he find it, he rejoiceth over it more than over the ninety and nine, which went not astray. Even so it is not will before your Father, that one of these little ones should perish." Seest thou by how many things He is urging to the care of our mean brethren. Say not then, "Such a one is a blacksmith, a shoemaker, he is a ploughman, he is a fool," and so despise him. For in order that thou shouldest not feel this, see by how many motives He persuades thee to practise moderation, and presses thee into a care for these. He set a little child, and saith, "Be ye as little children." And, "Whosoever receiveth such a little child receiveth me;" and, "Whosoever shall offend," shall suffer the utmost penalties. And He was not even satisfied with the comparison of the "millstone," but added also His "woe," and commanded us to cut off such, though they be in the place of hands and eyes to us. […]

(Verse 14) So it is not the will of your Father who is in heaven that one of these little ones should perish. He refers to the previously stated proposition, of which he said: See that you do not despise one of these little ones; and he teaches this by means of a placed parable, so that the little ones may not be despised.

What follows, Even so it is not the will, &c. is to be referred to what was said above, Take heed that ye despise not one of these little ones; and so He shows that this parable was set forth to enforce that same saying. Also in saying, It is not the will of my Father which is in heaven that one of these little ones should perish, He shows that so oft as one of these little ones does perish, it is not by the Father's will that it perishes.

We must consider, my brothers, why the Lord declares there is more joy in heaven over converted sinners than over the just who stand firm, unless it is what we ourselves know through daily experience of observation: that very often those who know themselves weighed down by no burden of sins do indeed stand in the way of justice, commit no unlawful acts, yet do not anxiously long for the heavenly homeland, and grant themselves as much use of lawful things as they remember having committed no unlawful ones. And very often they remain sluggish in practicing the highest goods, because they are quite secure in themselves that they have committed no graver evils. But on the contrary, sometimes those who remember having done certain unlawful things, pierced with compunction by their very grief, burn ardently with love of God, and exercise themselves in great virtues, seek out all the difficulties of holy struggle, abandon all worldly things, flee honors, rejoice when insults are received, burn with desire, long for the heavenly homeland; and because they consider that they have strayed from God, they compensate for preceding losses with subsequent gains. Therefore there is greater joy in heaven over a converted sinner than over a just person standing firm, because a commander in battle also loves more that soldier who, returning after flight, vigorously presses the enemy, than the one who never showed his back, and never performed any deed of valor. So too the farmer loves more that land which after thorns brings forth abundant crops, than that which never had thorns and never produces a fertile harvest.

He concludes therefore: so it is not the will of your Father, who is in heaven, that one of these little ones should perish. He says less and signifies more, because his will is that they be saved; 1 Tim 2:4: who will have all …