People should always try and help others
Act 2, Scene 3
For a long while the Capulet vs. Montague feud has been going on. Friar thinks he may be able to end it when he agrees to help Romeo by marrying him and his new beloved, Juliet. Friar used the words, "In one respect I'll thy assistant be; For this alliance may so happy prove to turn your household's rancor to pure love", to tell Romeo that he would help him out and marry the two.
Act 3, Scene 3
Throughout the tragic play, Romeo has had some serious issues. But after he makes the deadly decision to murder Tybalt, he gets sentenced to death. So, of course he goes to Friar Laurence for help getting out of this situation. Friar says to Romeo, "Sojourn in Mantua. I'll find out your man, and he shall signify from time to time every good hap to you that chance is here." Basically Friar is telling Romeo that he should go to Mantua to escape the death penalty and he will help from there.
Act 4, Scene 1
Juliet, just like Romeo, has also had some problems. Her parents now would like her to marry Paris. Even though she is already married to Romeo, but they don't know that. So Juliet seeks out Friar Laurence for help to stay faithful to Romeo and not marry Paris. "And if thou darest, I'll give thee remedy" is how Friar offers the potion to get her out of the second marriage.
THEME Act 5, Scene 3
Friar follows the theme, people should always try and help others, with almost everything he does. It's kind of his personality to. In one of the last scenes of the play, Friar tries to coax Juliet out of the Capulet tomb where she was placed after her 'death'. He says to her, "Lady, come from that nest of death, contagion and unnatural sleep...come, come away. Thy husband in thy bosom there lies dead; And Paris too." He doesn't want Juliet to see her beloved dead..