Ambrose of Milan

Without any loss therefore, he passed by the guardians, and the Word mixed with the daughters of that heavenly city seeks, and by seeking it arouses love in himself, and where it seeks the Word, it recognizes. It knows what waits among the prayers of the saints, and what clings to them, and understands how it feeds his Church, or the souls of his righteous ones among the lilies. The Lord demonstrated this mystery to you in the Gospel when he led his disciples through the fields on the Sabbath. …

On Isaac and the Soul ↗

Bede

My beloved is mine, and I am his, etc. The meaning of this response is as broad as it seems to be briefly concluded. For it may rightly be understood in this way: My beloved is mine, and I am his, we are united by true and sincere love. It may also be understood in this way: My beloved has promised me such words of His divine exhortation, consolation, and promise, and I will always offer Him a clear face of my conduct and a pure voice of my speech and grace. …

Commentary on the Song of Songs ↗

Bernard of Clairvaux

"My beloved to me, and I to him." The preceding discourse assigned this voice to the universal Church, on account of the promises of life made to her by God, both of the life which now is and of the life to come; the question now before us concerns the individual soul, because one soul cannot arrogate to itself what the whole body dares to claim, nor in any way draw that claim to itself. …

Sermons on the Song of Songs, Sermon 69 ↗