Truth and love, said in one breath
The word truth appears five times in the first four verses and every time it is attached to people rather than to propositions in the abstract. The writer loves 'in truth' (1:1), and so do 'all they that know the truth' (1:1). The truth 'abideth in us, and it shall be with us for ever' (1:2). Grace, mercy and peace come 'in truth and love' (1:3). And what gives him joy is finding 'certain of thy children walking in truth' (1:4). Then love is defined by obedience rather than by feeling: 'And this is love, that we should walk after his commandments' (1:6). The pairing is the point of the whole letter. A congregation that keeps love without truth will open its door to anything, and one that keeps truth without love will have nothing worth defending. The letter asks for both in the same paragraph and then acts on both.
2 John 1:1 · 2 John 1:2 · 2 John 1:4 · 2 John 1:6

