Is it legal to share two songs and give copies of those songs?

No, it is not legal to make copies of songs and share them, unless you get the permission of the owner of the songs to do this.

When you buy a song or album off iTunes, you acquire a personal license. This means that it is for your personal use, not for re-sale and not for commercial use. There are two ways to do this, acquire a copyright license from the copyright holder of those songs (record label, band, song writer, etc (there are often several)) or have your pastor purchase the songs himself and obtain a commercial license. This would likely be the most cost effective method for 2 songs. Bear in mind that the license must be obtained by anyone holding a copyright interest in the music, composer, performer, producer, etc. If they have a registered copyright this information is relatively easy to ascertain.

Any copying of a song that is copyrighted is illegal unless you have advanced written permission of the copyright owner (who is not necessarily the creator of the song or the group performing it). Furthermore, your paster should not play these songs for anyone other than himself without written permission. There is no exception to copyright law for religious organizations.

Only the copyright owner has the lawful right to make copies.