"And while thus battling against opposition, pushing forward with untiring zeal the gospel work, and guarding the interests of a church yet young in the faith, Paul was bearing upon his soul a heavy burden for all the churches. AA 296.2"
"Beside those things that are without, that which cometh upon me daily, the care of all the churches."
Both passages discuss Paul's burden and care for the churches. The EGW passage amplifies the sentiment expressed in 2 Corinthians 11:28.
"News of apostasy in some of the churches of his planting caused him deep sorrow. He feared that his efforts in their behalf might prove to be in vain. Many a sleepless night was spent in prayer and earnest thought as he learned of the methods employed to counteract his work. As he had opportunity and as their condition demanded, he wrote to the churches, giving reproof, counsel, admonition, and encouragement. In these letters the apostle does not dwell on his own trials, yet there are occasional glimpses of his labors and sufferings in the cause of Christ. Stripes and imprisonment, cold and hunger and thirst, perils by land and by sea, in the city and in the wilderness, from his own countrymen, from the heathen, and from false brethren—all this he endured for the sake of the gospel. He was “defamed,” “reviled,” made “the offscouring of all things,” “perplexed,” “persecuted,” “troubled on every side,” “in jeopardy every hour,” “alway delivered unto death for Jesus’ sake.” AA 296.3"
"Beside those things that are without, that which cometh upon me daily, the care of all the churches."
The EGW passage directly alludes to and expands upon the sufferings of Paul, which are detailed in 2 Corinthians 11, including verse 28. The phrase "care of all the churches" is a summary of the anxieties described in the EGW passage.
"My little children, of whom I travail in birth again until Christ be formed in you,"
Both passages express the deep concern and burden Paul felt for the spiritual well-being of the churches he established. Galatians 4:19 speaks of the pain of spiritual labor, which aligns with EGW's description of Paul's sorrow and sleepless nights.