You hypocrite, first cast out the beam out of your own eye; and then shall you see clearly to cast out the speck out of your brother's eye.
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Hilary of Poitiers
AD 368
Otherwise; The sin against the Holy Spirit is to take from God power which has influences, and from Christ substance which is of eternity, through whom as God came to man, so shall man likewise come to God. As much greater then as is the beam than the mote, so much greater is the sin against the Holy Spirit than all other sins. As when unbelievers object to others carnal sins, and secrete in themselves the burden of that sin, to wit, that they trust not the promises of God, their minds being blinded as their eye might be by a beam.