"Our interview with that dear family was very precious. Our hearts were knit together; especially was the heart of Sister Hastings knit with mine as were those of David and Jonathan. Our union was not marred while she lived. LS 123.1"
"And it came to pass, when he had made an end of speaking unto Saul, that the soul of Jonathan was knit with the soul of David, and Jonathan loved him as his own soul."
The EGW passage explicitly alludes to the relationship between David and Jonathan, stating that the heart of Sister Hastings was knit with hers 'as were those of David and Jonathan,' directly referencing 1 Samuel 18:1.