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investigating for what person or which time the Spirit of Christ in them was indicating when he testified beforehand to the sufferings with reference to Christ and the glories after these things,
Escudriñando cuándo y en qué punto de tiempo significaba el Espíritu de Cristo que estaba en ellos, el cual prenunciaba las aflicciones que habían de venir á Cristo, y las glorias después de ellas.
Searching what, or what manner of time the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow.
searching for who or what kind of time the Spirit of Christ which was in them pointed to when he predicted the sufferings of Christ and the glories that would follow them.