JMNT(i)
6 If we should up and say that we are continuously having common being (or: constantly enjoying fellowship, participation and partnership) with Him and yet may be habitually walking round about (= living our lives) within the Darkness and the dim realm of shadows [note: a figure of ignorance, or the obscure previous way of seeing reality; the existence before the Breath-effect vibrated over us], we are constantly lying (speaking falsely) and are not in the habit of doing the truth (or: are not constructing, practicing or producing reality).
7 Yet if we keep on walking about (= continue living our life) within the midst of and in union with the Light, as He exists (or: is) within the Light, we constantly have common being and existence (or: hold common fellowship, participation and enjoy partnership) with one another, and the blood of Jesus, His Son, keeps continually and repeatedly cleansing us (or: is progressively rendering us pure) from every sin (or: from all error, failure, deviation, mistake, and from every [successive] shot that is off target [when it occurs]).