Covenant Duties.
It is here proposed to show, that every incumbent duty ought, in suitable circumstances, to be engaged to in the exercise of Covenanting. The law and covenant of God are co-extensive; and what is enjoined in the one is confirmed in the other. The proposals of that Covenant include its promises and its duties. The former are made and fulfilled by its glorious Originator; the latter are enjoined and obligatory on man. The duties of that Covenant are God's law; and the demands of the law are all made …
John Cunningham—The Ordinance of Covenanting

Letter Xlv (Circa A. D. 1120) to a Youth Named Fulk, who Afterwards was Archdeacon of Langres
To a Youth Named Fulk, Who Afterwards Was Archdeacon of Langres He gravely warns Fulk, a Canon Regular, whom an uncle had by persuasions and promises drawn back to the world, to obey God and be faithful to Him rather than to his uncle. To the honourable young man Fulk, Brother Bernard, a sinner, wishes such joy in youth as in old age he will not regret. 1. I do not wonder at your surprise; I should wonder if you were not suprised [sic] that I should write to you, a countryman to a citizen, a monk …
Saint Bernard of Clairvaux—Some Letters of Saint Bernard, Abbot of Clairvaux

Letter xix (A. D. 1127) to Suger, Abbot of S. Denis
To Suger, Abbot of S. Denis He praises Suger, who had unexpectedly renounced the pride and luxury of the world to give himself to the modest habits of the religious life. He blames severely the clerk who devotes himself rather to the service of princes than that of God. 1. A piece of good news has reached our district; it cannot fail to do great good to whomsoever it shall have come. For who that fear God, hearing what great things He has done for your soul, do not rejoice and wonder at the great …
Saint Bernard of Clairvaux—Some Letters of Saint Bernard, Abbot of Clairvaux