Do not desert a friend in time of need, nor forsake him nor fail him, for friendship is the support of life. Let us then bear our burdens as the Apostle has taught (cf. Gal. 6:2): for he spoke to those whom the charity of the same one body had embraced together. If friends in prosperity help friends, why do they not also in times of adversity offer their support? Let us aid by giving counsel, let us offer our best endeavors, let us sympathize with them with all our heart.
Remember, then, that you received a spiritual seal, the spirit of wisdom and understanding, the spirit of knowledge and reverence, the spirit of holy fear. Keep safe what you received. God the Father sealed you, Christ the Lord strengthened you and sent the Spirit into your hearts as the pledge of what is to come.
The Lord Jesus himself proclaims, 'This is My Body.' Before the blessing of the heavenly words something of another character is spoken of; after consecration it is designated 'body'. He himself speaks of his blood. Before the consecration it is spoken of as something else; after the consecration it is spoken of as 'blood'. And you say, 'Amen', that is, 'It is true.' What the mouth speaks, let the mind within confess; what the tongue utters, let the heart feel.
Law is twofold -- natural and written. The natural law is in the heart, the written law on tables. All men are under the natural law.
God is not accustomed to refusing a good gift to those who ask for one. Since he is good, and especially to those who are faithful to him, let us hold fast to him with all our soul, our heart, our strength, and so enjoy his light and see his glory and possess the grace of supernatural joy.
... the Apostle Paul says that we are sealed in the Spirit (cf. Eph. 1:13); since we have in the Son the image of the Father, and in the Spirit the seal of the Son. Let us, then, sealed by this Trinity, take more diligent heed, lest either levity of character or the deceit of any unfaithfulness unseal the pledge which we have received in our hearts.
... the Apostle Peter declared that the Church was built by the Holy Spirit. For you read that he said: 'God, Who knows the hearts of men, bore witness, giving them the Holy Spirit, even as was given to us; and He made no distinction between us and them, purifying their hearts by faith' (Acts 15:8-9). In which is to be considered, that as Christ is the Cornerstone, Who joined together both peoples into one, so, too, the Holy Spirit made no distinction between the hearts of each people, but united them.