But in Order that we Fall not Away from Continence...
10. But in order that we fall not away from Continence, we ought to watch specially against those snares of the suggestions of the devil, that we presume not of our own strength. For, "Cursed is every one that setteth his hope in man." [1838] And who is he, but man? We cannot therefore truly say that he setteth not his hope in man, who setteth it in himself. For this also, to "live after man," what is it but to "live after the flesh?" Whoso therefore is tempted by such a suggestion, let him hear, …
St. Augustine—On Continence

If, Therefore, You had not as yet Vowed unto God Widowed Continence...
23. If, therefore, you had not as yet vowed unto God widowed continence, we would assuredly exhort you to vow it; but, in that you have already vowed it, we exhort you to persevere. And yet I see that I must so speak as to lead those also who had as yet thought of marriage to love it and to seize on it. Therefore let us give ear unto the Apostle, "She who is unmarried," saith he, "is careful about the things of the Lord, to be holy both in body and spirit; but she who is married is careful about …
St. Augustine—On the Good of Widowhood.

Prayer
But I give myself unto prayer.' Psa 109: 4. I shall not here expatiate upon prayer, as it will be considered more fully in the Lord's prayer. It is one thing to pray, and another thing to be given to prayer: he who prays frequently, is said to be given to prayer; as he who often distributes alms, is said to be given to charity. Prayer is a glorious ordinance, it is the soul's trading with heaven. God comes down to us by his Spirit, and we go up to him by prayer. What is prayer? It is an offering …
Thomas Watson—The Ten Commandments