1619 GREEK εκτενως, EKTENOS ek-ten-oce' adverb from εκτενες, - ektenes G 1618; intently:--fervently.
εκτενως 1 Pe 1:22 Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently: