16 By this we come to know (progressively to recognize, to perceive, to understand) the [essential] love: that He laid down His [own] life for us; and we ought to lay [our] lives down for [those who are our] brothers [in Him].
17 But if anyone has this world's goods (resources for sustaining life) and sees his brother and fellow believer in need, yet closes his heart of compassion against him, how can the love of God live and remain in him?
18 Little children, let us not love [merely] in theory or in speech but in deed and in truth (in practice and in sincerity).
19 By this we shall come to know (perceive, recognize, and understand) that we are of the Truth, and can reassure (quiet, conciliate, and pacify) our hearts in His presence,
20 Whenever our hearts in [tormenting] self-accusation make us feel guilty and condemn us. [For we are in God's hands.] For He is above and greater than our consciences (our hearts), and He knows (perceives and understands) everything [nothing is hidden from Him].
21 And, beloved, if our consciences (our hearts) do not accuse us [if they do not make us feel guilty and condemn us], we have confidence (complete assurance and boldness) before God,
22 And we receive from Him whatever we ask, because we [watchfully] obey His orders [observe His suggestions and injunctions, follow His plan for us] and [habitually] practice what is pleasing to Him.