In Matrimony there are vows: Vow to Forsake Others: to not marry or have conjugal relations with anyone else. Vow to Obey: that wives will obey their husbanda. Vow to stay together in Sickness and Health: self explanatory. Often when one takes holy orders to become a monk or nun, one is required to take vows: Vow of Chastity: to never marry or have conjugal rites. Vow of Obedience: to obey superiors such as an abbot or abbess and other ecclesiastical leaders. Vow of Poverty: to give up all wordly goods and property and live communally )sharing everything). Vow of Silence: either for a time or perpetually not utter words in conversation, saving them for prayers and mass. *Not many monastic orders are silent orders. However, Jesus Christ our Lord says do not take vows or oaths: “Again, you have heard that it was said to the people long ago, 'Do not break your oath, but fulfill to the Lord the vows you have made.' But I tell you, do not swear an oath (ὀμνύω, vow) at all: either by heaven, for it is God’s throne; 35 or by the earth, for it is his footstool; or by Jerusalem, for it is the city of the Great King. 36 And do not swear by your head, for you cannot make even one hair white or black. 37 All you need to say is simply ‘Yes’ or ‘No’; anything beyond this comes from the evil one.” (Matthew 5:33-37) Our Lord says to swear an oath of vow comes from the evil one, Satan.