Matthew 5:45

5:45 so that you may be like ¹  your Father in heaven, since he causes the sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous.

Matthew 5:48

5:48 So then, be perfect, as your heavenly Father is perfect. ² 

[5:45]  ¹ tn Grk “be sons of your Father in heaven.” Here, however, the focus is not on attaining a relationship (becoming a child of God) but rather on being the kind of person who shares the characteristics of God himself (a frequent meaning of the Semitic idiom “son of”). See L&N 58.26.

[5:48]  ² sn This remark echoes the more common OT statements like Lev 19:2 or Deut 18:13: “you must be holy as I am holy.”