"You have heard that it was said to the men of old, 'You shall not swear falsely...' But I say to you, Do not swear at all. ' O LORD, our Lord, how majestic is your name in all the earth!' (Ps 8:1). The second commandment enjoins respect for the Lord's name. The name of the Lord is Holy. The second commandment forbids every improper use of God's name. Blasphemy is the use of the name of God, of Jesus Christ, of the Virgin Mary, and of the saints in an offensive way. False oaths call on God to be witness to a lie. Perjury is a grave offence against the Lord who is always faithful to His promises. 'Do not swear whether by the Creator, or any creature, except truthfully, of necessity and with reverence' (St Ignatius of Loyola, Spiritual Exercises 38). In Baptism, the Christian receives his name in the church. Parents, godparents and the pastor are to see that he be given a Christian name. The patron saint provides a model of charity and the assurance of his prayer. The Christian begins his prayers and activities with the Sign of the Cross: 'in the name of the Father and of the Son and of the Holy Spirit. Amen.' God calls each one by name (cf. Is 43:1)"