JMNT(i)
8 the breath (or: spirit; Breath-effect) and the water and the blood, and these three are [coming; proceeding] into the midst of the One (or: exist [leading] into one [reality]; are existing into the one thing; or: = are in unison; or: = are in agreement, or are for one thing).
9 Since (or: If) we are habitually receiving the testimony (the witness; the evidence) of humans (or: from people), the evidence of God (God's witness; testimony from God; or: the testimony and evidence which is God) is (or: exists being) greater, because it is God's testimony (or: the witness which is God) that He has testified (given as evidence; witnessed) and it now exists available as evidence (or: testimony), concerning His Son (or: round about the Son which is Him; about the Son Who originates from Him).
10 The person continuously and progressively believing (or: keeping confidence and habitually putting trust) into the midst of God's Son constantly holds (or: has; possesses) the testimony (witness; evidence) [p74 & A add: of God] within himself; the one not believing in God [A reads: the Son] has made Him out to be (or: has construed Him) a liar, because he has not believed or put trust into the evidence (testimony; witness) which God has attested and affirmed concerning His Son (or: shown as proof round about the Son from, and which is, Him).