A wicked messenger falleth into mischief: but a faithful ambassador is health.
– Proverbs 13:17
Relying on an unreliable messenger brings many troubles upon you. The slothful messenger is a serious irritation (Proverbs 10:26) and a foolish messenger does more harm than good, as far accomplishing your purpose is concerned (Proverbs 26:6). Here a wicked messenger causes you trouble, or plunges you into it. The contrast is with the faithful ambassador, or messenger. The word for health has the idea of being curative and so, helpful. The faithful messenger is also presented as being refreshing to the one who sent him (Proverbs 25:13).