32 Their folly being as great as their blasphemy, they fail to mark that Christ's words, spoken under similar circumstances, are always consistent; they cleave to the letter and ignore the purpose of His words. There is the widest difference between My soul is sorrowful even unto death, and Henceforth you shall see the Son of Man sitting at the right hand of power; so also between Father, if it be possible, let this cup pass away, from Me, and The cup which the Father has given Me, shall I not drink it ? and further between My God, My God, why have You forsaken Me ? and Verily I say unto you, Today shall you be with Me in Paradise, and between Father, into Your hands I commend My Spirit, and Father, forgive them, for they know not what they do ; and their narrow minds, unable to grasp the Divine meaning, plunge into blasphemy in the attempt at explanation.
There is a broad distinction between anxiety and a mind at ease, between haste and the prayer for delay, between words of anguish and words of encouragement, between despair for self and confident entreaty for others; and the heretics display their impiety by ignoring the assertions of Deity and the Divine nature of Christ, which account for the one class of His words, while they concentrate their attention upon the deeds and words which refer only to His ministry on earth. I have therefore set out all the elements contained in the mystery of the Soul and Body of the Lord Jesus Christ; all have been sought out, none suppressed.
Next, casting the calm light of reason upon the question, I have referred each of His sayings to the class to which its meaning attaches it, and so have shown that He had also a confidence which never wavered, a will which never faltered, an assurance which never murmured, that, when He commended His own soul to the Father, in this was involved a prayer for the pardon of others. Thus a complete presentment of the teaching of the Gospel interprets and confirms all (and not some only) of the words of Christ.
Source: On the Trinity (New Advent)